/*
* Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017
* Jonathan Schleifer <js@heap.zone>
*
* All rights reserved.
*
* This file is part of ObjFW. It may be distributed under the terms of the
* Q Public License 1.0, which can be found in the file LICENSE.QPL included in
* the packaging of this file.
*
* Alternatively, it may be distributed under the terms of the GNU General
* Public License, either version 2 or 3, which can be found in the file
* LICENSE.GPLv2 or LICENSE.GPLv3 respectively included in the packaging of this
* file.
*/
#import "OFObject.h"
OF_ASSUME_NONNULL_BEGIN
/*! @file */
@class OFTimer;
@class OFDate;
@class OFRunLoop;
#ifdef OF_HAVE_THREADS
@class OFCondition;
#endif
#ifdef OF_HAVE_BLOCKS
/*!
* @brief A block to execute when a timer fires.
*
* @param timer The timer which fired
*/
typedef void (^of_timer_block_t)(OFTimer *timer);
#endif
/*!
* @class OFTimer OFTimer.h ObjFW/OFTimer.h
*
* @brief A class for creating and firing timers.
*/
@interface OFTimer: OFObject <OFComparing>
{
OFDate *_fireDate;
of_time_interval_t _interval;
id _target, _object1, _object2;
SEL _selector;
uint8_t _arguments;
bool _repeats;
#ifdef OF_HAVE_BLOCKS
of_timer_block_t _block;
#endif
bool _valid;
#ifdef OF_HAVE_THREADS
OFCondition *_condition;
bool _done;
#endif
OFRunLoop *_inRunLoop;
}
/*!
* Whether the timer is valid.
*/
@property (readonly) bool isValid;
/*!
* The time interval in which the timer will repeat, if it is a repeating
* timer.
*/
@property (readonly) of_time_interval_t timeInterval;
/*!
* @brief Creates and schedules a new timer with the specified time interval.
*
* @param timeInterval The time interval after which the timer should be fired
* @param target The target on which to call the selector
* @param selector The selector to call on the target
* @param repeats Whether the timer repeats after it has been executed
* @return A new, autoreleased timer
*/
+ (instancetype)scheduledTimerWithTimeInterval: (of_time_interval_t)timeInterval
target: (id)target
selector: (SEL)selector
repeats: (bool)repeats;
/*!
* @brief Creates and schedules a new timer with the specified time interval.
*
* @param timeInterval The time interval after which the timer should be fired
* @param target The target on which to call the selector
* @param selector The selector to call on the target
* @param object An object to pass when calling the selector on the target
* @param repeats Whether the timer repeats after it has been executed
* @return A new, autoreleased timer
*/
+ (instancetype)scheduledTimerWithTimeInterval: (of_time_interval_t)timeInterval
target: (id)target
selector: (SEL)selector
object: (nullable id)object
repeats: (bool)repeats;
/*!
* @brief Creates and schedules a new timer with the specified time interval.
*
* @param timeInterval The time interval after which the timer should be fired
* @param target The target on which to call the selector
* @param selector The selector to call on the target
* @param object1 The first object to pass when calling the selector on the
* target
* @param object2 The second object to pass when calling the selector on the
* target
* @param repeats Whether the timer repeats after it has been executed
* @return A new, autoreleased timer
*/
+ (instancetype)scheduledTimerWithTimeInterval: (of_time_interval_t)timeInterval
target: (id)target
selector: (SEL)selector
object: (nullable id)object1
object: (nullable id)object2
repeats: (bool)repeats;
#ifdef OF_HAVE_BLOCKS
/*!
* @brief Creates and schedules a new timer with the specified time interval.
*
* @param timeInterval The time interval after which the timer should be fired
* @param repeats Whether the timer repeats after it has been executed
* @param block The block to invoke when the timer fires
* @return A new, autoreleased timer
*/
+ (instancetype)scheduledTimerWithTimeInterval: (of_time_interval_t)timeInterval
repeats: (bool)repeats
block: (of_timer_block_t)block;
#endif
/*!
* @brief Creates a new timer with the specified time interval.
*
* @param timeInterval The time interval after which the timer should be fired
* @param target The target on which to call the selector
* @param selector The selector to call on the target
* @param repeats Whether the timer repeats after it has been executed
* @return A new, autoreleased timer
*/
+ (instancetype)timerWithTimeInterval: (of_time_interval_t)timeInterval
target: (id)target
selector: (SEL)selector
repeats: (bool)repeats;
/*!
* @brief Creates a new timer with the specified time interval.
*
* @param timeInterval The time interval after which the timer should be fired
* @param target The target on which to call the selector
* @param selector The selector to call on the target
* @param object An object to pass when calling the selector on the target
* @param repeats Whether the timer repeats after it has been executed
* @return A new, autoreleased timer
*/
+ (instancetype)timerWithTimeInterval: (of_time_interval_t)timeInterval
target: (id)target
selector: (SEL)selector
object: (nullable id)object
repeats: (bool)repeats;
/*!
* @brief Creates a new timer with the specified time interval.
*
* @param timeInterval The time interval after which the timer should be fired
* @param target The target on which to call the selector
* @param selector The selector to call on the target
* @param object1 The first object to pass when calling the selector on the
* target
* @param object2 The second object to pass when calling the selector on the
* target
* @param repeats Whether the timer repeats after it has been executed
* @return A new, autoreleased timer
*/
+ (instancetype)timerWithTimeInterval: (of_time_interval_t)timeInterval
target: (id)target
selector: (SEL)selector
object: (nullable id)object1
object: (nullable id)object2
repeats: (bool)repeats;
#ifdef OF_HAVE_BLOCKS
/*!
* @brief Creates a new timer with the specified time interval.
*
* @param timeInterval The time interval after which the timer should be fired
* @param repeats Whether the timer repeats after it has been executed
* @param block The block to invoke when the timer fires
* @return A new, autoreleased timer
*/
+ (instancetype)timerWithTimeInterval: (of_time_interval_t)timeInterval
repeats: (bool)repeats
block: (of_timer_block_t)block;
#endif
/*!
* @brief Initializes an already allocated timer with the specified time
* interval.
*
* @param fireDate The date at which the timer should fire
* @param interval The time interval after which to repeat the timer, if it is
* a repeating timer
* @param target The target on which to call the selector
* @param selector The selector to call on the target
* @param repeats Whether the timer repeats after it has been executed
* @return An initialized timer
*/
- initWithFireDate: (OFDate*)fireDate
interval: (of_time_interval_t)interval
target: (id)target
selector: (SEL)selector
repeats: (bool)repeats;
/*!
* @brief Initializes an already allocated timer with the specified time
* interval.
*
* @param fireDate The date at which the timer should fire
* @param interval The time interval after which to repeat the timer, if it is
* a repeating timer
* @param target The target on which to call the selector
* @param selector The selector to call on the target
* @param object An object to pass when calling the selector on the target
* @param repeats Whether the timer repeats after it has been executed
* @return An initialized timer
*/
- initWithFireDate: (OFDate*)fireDate
interval: (of_time_interval_t)interval
target: (id)target
selector: (SEL)selector
object: (nullable id)object
repeats: (bool)repeats;
/*!
* @brief Initializes an already allocated timer with the specified time
* interval.
*
* @param fireDate The date at which the timer should fire
* @param interval The time interval after which to repeat the timer, if it is
* a repeating timer
* @param target The target on which to call the selector
* @param selector The selector to call on the target
* @param object1 The first object to pass when calling the selector on the
* target
* @param object2 The second object to pass when calling the selector on the
* target
* @param repeats Whether the timer repeats after it has been executed
* @return An initialized timer
*/
- initWithFireDate: (OFDate*)fireDate
interval: (of_time_interval_t)interval
target: (id)target
selector: (SEL)selector
object: (nullable id)object1
object: (nullable id)object2
repeats: (bool)repeats;
#ifdef OF_HAVE_BLOCKS
/*!
* @brief Initializes an already allocated timer with the specified time
* interval.
*
* @param fireDate The date at which the timer should fire
* @param interval The time interval after which to repeat the timer, if it is
* a repeating timer
* @param repeats Whether the timer repeats after it has been executed
* @param block The block to invoke when the timer fires
* @return An initialized timer
*/
- initWithFireDate: (OFDate*)fireDate
interval: (of_time_interval_t)interval
repeats: (bool)repeats
block: (of_timer_block_t)block;
#endif
/*!
* @brief Fires the timer, meaning it will execute the specified selector on the
* target.
*/
- (void)fire;
/*!
* @brief Returns the next date at which the timer will fire.
*
* @return The next date at which the timer will fire
*/
- (OFDate*)fireDate;
/*!
* @brief Sets the next date at which the timer will fire.
*
* If the timer is already scheduled in a run loop, it will be rescheduled.
* Note that rescheduling is an expensive operation, though it still might be
* preferable to reschedule instead of invalidating the timer and creating a
* new one.
*
* @param fireDate The next date at which the timer will fire
*/
- (void)setFireDate: (OFDate*)fireDate;
/*!
* @brief Invalidates the timer, preventing it from firing.
*/
- (void)invalidate;
#ifdef OF_HAVE_THREADS
/*!
* @brief Waits until the timer fired.
*/
- (void)waitUntilDone;
#endif
@end
OF_ASSUME_NONNULL_END